Initial commit

scripts/serve-dist.js

@@ -0,0 +1,53 @@
+import http from 'http'
+import fs from 'fs'
+import path from 'path'
+import { fileURLToPath } from 'url'
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url))
+const distDir = process.env.DIST_DIR || 'dist'
+const root = path.resolve(__dirname, '..', distDir)
+const host = process.env.HOST || '127.0.0.1'
+const port = process.env.PORT || 8080
+
+const mime = {
+  '.js': 'application/javascript',
+  '.css': 'text/css',
+  '.html': 'text/html',
+  '.wasm': 'application/wasm',
+  '.json': 'application/json',
+  '.svg': 'image/svg+xml'
+}
+
+const server = http.createServer((req, res) => {
+  try {
+    let reqUrl = decodeURI(new URL(req.url, `http://localhost`).pathname)
+    if (reqUrl === '/') reqUrl = '/index.html'
+    const safePath = path.normalize(path.join(root, reqUrl))
+    if (!safePath.startsWith(root)) {
+      res.statusCode = 403
+      return res.end('Forbidden')
+    }
+
+    fs.stat(safePath, (err, stats) => {
+      if (err || !stats.isFile()) {
+        res.statusCode = 404
+        return res.end('Not found')
+      }
+
+      const ext = path.extname(safePath).toLowerCase()
+      res.setHeader('Content-Type', mime[ext] || 'application/octet-stream')
+      res.setHeader('Content-Length', stats.size)
+      const stream = fs.createReadStream(safePath)
+      stream.pipe(res)
+      stream.on('error', () => {
+        res.statusCode = 500
+        res.end()
+      })
+    })
+  } catch (e) {
+    res.statusCode = 500
+    res.end('Server error')
+  }
+})
+
+server.listen(port, host, () => console.log(`Serving ${root} at http://${host}:${port}/`))